Welcome KS3 Students! It's time to put your knowledge of percentages, ratios and proportion to the test. Don't worry, this won't be a boring maths lesson, we promise. Think of it as a cool way to test your numeracy skills. So, brace yourself, let the fun commence and let's see how many of these 10 questions you can crack!

1 .

A pizza is sliced into 8 pieces. What fraction of the pizza is 3 slices?

2 .

What is the proportion of 20 out of 100 represented as a decimal?

0.02

0.2

2

20

20 out of 100 as a decimal is 0.2.

3 .

What is 40% of £50?

£10

£20

£15

£25

40% of 50 is calculated as (0.40 x 50) = £20

4 .

The ratio of boys to girls in a class is 5:3. If there are 15 girls, how many boys are there?

20

25

30

35

The ratio 5:3 means for every 5 boys there are 3 girls. If there are 15 girls, the number of boys would be (15 ÷ 3) x 5 = 25 boys.

5 .

If water makes up 70% of a person's body weight and a person weighs 50kg, how much of their weight is water?

25 kg

30 kg

35 kg

40 kg

70% of 50kg is (0.70 x 50) = 35 kg.

6 .

What is the decimal equivalent of 45%?

0.045

0.45

4.5

45

The decimal equivalent of 45% is 0.45.

7 .

If a dress originally costing £60 is reduced by 15%, how much is the dress now?

£45

£50

£51

£55

15% of 60 is £9. So the dress is now £60 - £9 = £51.

8 .

What is 15% of 90kg?

9 kg

10.5 kg

13.5 kg

15 kg

15% of 90 is calculated as (0.15 x 90) = 13.5 kg

9 .

The ratio of blue to red balls in a bag is 3:7. If there are 28 red balls, how many blue balls are there?

8

10

12

14

The ratio 3:7 means for every 3 blue balls there are 7 red ones. If there are 28 red balls, the number of blue balls would be (28 ÷ 7) x 3 = 12 blue balls.

10 .

The ratio of cats to dogs in a park is 3:4. If there are 24 dogs, how many cats are there?

18

21

27

32

The ratio 3:4 means for every 3 cats there are 4 dogs. If there are 24 dogs, the number of cats would be (24 ÷ 4) x 3 = 18 cats.

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^{3}⁄_{8}of the pizza.